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Full text of "Handbook Of Chemical Engineering - I"

108
CHEMICAL ENGINEERING WEIGHTS OF CERTAIN SOLIDS.—Continued
Substance	Average sp. gr. water = 1	Average weight Ib. per cu. ft.
Greenstone (trap)                 .........	2.7-3.2	170-200
Gypsum .              ...............	2.32	145
Lignite .    .   .      ...... . .............	1.3	80
Lime, quick ..........................	1.5	94
Lime, slaked             ................	1.3-1.4	81-87
Limestone ......................	2.7	168
Marble ..............................	2.5-2.8	160-180
Marl             .          .................	1.6-2.25	100-140
Mica .............................	2.8	175
Mud ...............................	1.67-1.92	104-120
Peat .............. ..................	.84	52
Pumice ...........................	.92	57
Quartz broken                                    . . .		94
Salt massive.            .............	2.1	128
Sand             ....................		100-130
Sandstone, massive ...................	2.14-2.36	133-147
Slag crushed            .          .   .       .....	1 2	75
Slate ................................	2.6-3.3	162-205
Sulphur ..........................	2.05	128
Traprock ............................	3.0	187
		
NOTE.—Unless specified otherwise, the figures are for the materials in the mass. When moved crushed or loose, there will usually be 25-35 % of voids.